混凝土小型空心砌块的热阻实验测量及数值分析

发布时间：2018-05-06 00:09

  本文选题：砌块热阻 + 权重　； 参考：《建筑科学》2014年12期

【摘要】：使用数值模拟与实验测试两种方法得到了轻集料混凝土小型空心砌块的热阻值,在对这2种方法进行比较的基础上,分析了砌块各传热方式对其热阻的权重关系,指出影响空心砌块热阻大小的主因是固体导热部分,孔内自然对流对热阻影响最小。研究表明砌块热阻随冷热壁面温差呈负线性规律变化,当冷热壁面温差由10.3℃变化到40.3℃时,砌块整体热阻减小率不超过8%。
[Abstract]:The thermal resistance of lightweight aggregate concrete hollow block is obtained by numerical simulation and experimental test. Based on the comparison of these two methods, the weight relation of each heat transfer mode of block to its thermal resistance is analyzed. It is pointed out that the main factor affecting the thermal resistance of hollow block is the solid heat conduction, and the natural convection in the hole has the least effect on the thermal resistance. The results show that the thermal resistance of block varies linearly with the temperature difference of cold and hot wall. When the temperature difference of cold and hot wall changes from 10.3 鈩，

本文编号：1849885